Undetectable on-line password guessing attacks
ACM SIGOPS Operating Systems Review
Comments on the S/KEY user authentication scheme
ACM SIGOPS Operating Systems Review
Security enhancement for optimal strong-password authentication protocol
ACM SIGOPS Operating Systems Review
A secure and traceable E-DRM system based on mobile device
Expert Systems with Applications: An International Journal
An efficient One-Time Password authentication scheme using a smart card
International Journal of Security and Networks
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With the one-time password concept, the S/Key scheme is widely utilized by the protocols with limited login times to defend against replay attack. By employing the simple and unidirectional hash function, the improved version of the S/Key scheme is proposed to withstand spoofing attack, pre-play attack and off-line dictionary attack. However, the schemes limit login times. Hence, we propose a scheme, preserving the same properties and withstanding the stolen-verifier attack, without limiting the login times.